{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "1296423bf23c7a58133970e223b1f47ec6570308"
            },
            {
              "fixed": "a94e62b7c7018fcfe0251e53fa96af30f12d923a"
            },
            {
              "fixed": "02647d98340738f918690ed227fdcf154db1b84a"
            },
            {
              "fixed": "f556bc844cc4423e5ad41ae41a4c24f1cf75b978"
            },
            {
              "fixed": "114b42507b6a23d9d24e24e4ef165233332c64d4"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.17.0"
            },
            {
              "fixed": "6.12.103"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.44"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80704.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: use proper context for logging\n\nThe same as the rest of the code, get_ss_info_from_atombios() uses\ncalc_pll_cs-\u003ectx-\u003elogger for logging. But calc_pll_cs-\u003ectx is\ninitialized only later in calc_pll_max_vco_construct(). Therefore, any\noutput using DC_LOG_SYNC() leads to a NULL pointer deference in\nget_ss_info_from_atombios().\n\nAccording to Sashiko, the very same problem exists in\ndce112_get_pix_clk_dividers() and dcn3_get_pix_clk_dividers() too.\n\nTo avoid accessing the NULL context, use clk_src-\u003ebase.ctx-\u003elogger\neverywhere. That context in base is initialized earlier in\ndce110_clk_src_construct() and dce112_clk_src_construct(). Before\nget_ss_info_from_atombios() or Sashiko's get_pix_clk_dividers functions\nabove are actually called. This is done by redefining DC_LOGGER to\nCTX-\u003elogger.\n\nBefore:\ndce110_clk_src_construct() did:\n -\u003e sets clk_src-\u003ebase.ctx = ctx;\n -\u003e ss_info_from_atombios_create()\n   -\u003e get_ss_info_from_atombios()   \u003c- uses calc_pll_cs-\u003ectx  # BOOM\n -\u003e calc_pll_max_vco_construct()    \u003c- sets calc_pll_cs-\u003ectx\n\nAfter:\ndce110_clk_src_construct() does:\n -\u003e sets clk_src-\u003ebase.ctx = ctx;\n -\u003e ss_info_from_atombios_create()\n   -\u003e get_ss_info_from_atombios()   \u003c- uses clk_src-\u003ebase.ctx\n\n(cherry picked from commit 6f16fcbb0c46a87e3d9685407e906573d60104b0)",
  "id": "CVE-2026-80704",
  "modified": "2026-08-30T03:30:35.152069633Z",
  "published": "2026-08-28T06:53:06.442Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/02647d98340738f918690ed227fdcf154db1b84a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/114b42507b6a23d9d24e24e4ef165233332c64d4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a94e62b7c7018fcfe0251e53fa96af30f12d923a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f556bc844cc4423e5ad41ae41a4c24f1cf75b978"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80704.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80704"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "drm/amd/display: use proper context for logging"
}